over the weekend katie perry, dave matthews and stevie wonder warmed up the president's crowd. another picture on the campaign trail, former president bill clinton. >> he's been a good commander-in-chief, a good decider in chief. >> reporter: publicly and privately obama campaign officials express confidence they will win. >> turn out for me, colorado. we will win this state. we'll win this election. >> reporter: bruce springsteen and jay-z will join the president on the campaign trail today and the campaign is sensitive about reports that romney supporters might be more enthusiastic than obama supporters and that's help explain why the campaign arranged this crowd to be behind us 4 1/2 hours before the president's rally is expected to arrive. >> governor mitt romney is just as busy in this final stretch. he campaigned sunday in des moines, iowa, cleveland, ohio, morrisville, pennsylvania. this morning romney holds a rally in sanford, florida. jan crawford is there. >> reporter: good morning. we're with the campaign all weekend. at one of these stops i think it was iowa, it's r